Road wheel



March 4 w24.. M8559@ J. ,-MILLAR ROAD WHEEL Filed July 9, 1921 2Sheets-Sheet 2 Patented ltan 4, l 22 telit ROAD WHEEL.

Application file-i July 9,

To all @071.0211 t may concern:

Be it known that l, JOHN MTLLAR. a citi Zen of the United `States, and aresident ot rirlington, in the county ot Hudson and State ot New Jersey,have invented certain new and useful lmprovements in Road lVheels, etwhich the following is a specification.

rThis invention relates to tires for automobiles, or the like; and hastor its main object and feature the production of a simple, efficientand inexpensive punctureless tire.

ln the accompanying drawings the invention is embodied in a concrete andpreferred form in which- Fig. 1 is a transverse vertical sectional viewof a tire embodying the invention:

Fig. 2 is a side elevation partly broken away and in section:

Fig. 3 is a detail sectional view on the plane of line 3 3 of Fig. 1:

Fig. 4 is a detail sectional view of one ot the intermediate thrustmembers.

1 indicates a cushion, preferably a pneumatic cushion, located remotefrom tread 2 and which may be adjacent to the hub of the wheel; or, asshown in the present instance, between cheeks 3 of a disc wheel. IThesecheeks are bolted together in any suitable manner as by bolts 4 and areprovided with a tilling member 5 of wood or other material that alsoacts as an abutment member for the cushion. rlhe conformation ot cheeks3 is of such character as to afford an enlarged space 6 in which thepneumatic cushion is located. This pneumatic cushion may be, and in thepresent instance is, a tube with both ends closed as at 7 and in buttingengagement and may be introduced into the space 6 through opening 8conveniently provided with a removable cover 9. Valve 10 in thepneumatic cushion extends between the aforesaid cheeks 3 and up throughan opening in member 5 and may be rendered accessible by means ot anopening 11 in one of said cheeks provided with an adjustable cover 12.

13 indicates a plurality of radially movable inner segmental members,the number of which may vary but here consisting of tour such members.14 indicates a plurality of radially movable outer segmental members,there being in the present instance twelve such members. The inner andouter segmental members are connected by means 1921. Serial No. 423,405.

around to bring the elongated parts of theheads under the 'lianges otthe sockets* Outer segments 14 are also provided with soclrets 21 formedby ianges in adjacent ends of two adjoining sections 14; each section 14extending from substantially the center of one head 19 to the center ofthe neat adjacent head 19. Suitable means are provided for guiding thethrust members. ln the present instance these means take the followingform: 22 indicate guides through which members 17 of the extensiblethrust members pass, said guide members being provided with projections23, that pass through cheeks 3, the outer ends of which are threaded toreceive nuts 24 to thereby hold the guide members stationary withrespect to said cheeks, and to bolt said cheeks together at their outeredges. To properly guide tread 2, annular guide members 25 are providedwhich are conveniently clamped between cheeks 3 and nuts 24. The innerends of guides 22 are provided with cups 2G containing a washer 27bearing against sockets 2O of inner segmental member 13. To preventingress of dust, cheeks 3 are bent inwardly at their outermost edges 28to form a shield. Tread 2 is continuous and the outer segmental members14 may be secured to it in any suitable manner as by being imbedded insaid tread, as shown.

It will now be understood that during the revolution of the wheel thatportion of the tread which is against the ground will cause that segment14 which is adjacent thereto to cause a thrust member 16--17 to moveinwardly through guide 22 and will transmit the thrust to innersegmental member 13. Because the intermediate thrust members areextensible, the thrust produced by one of these members will causesegmental member 13 to pull only inner part 16 of the next adjacentthrust member with it, and said segmental member 13 will slide againstthe inner walls of cheeks 3 and thus transmit the thrust to cushion l.The tread in producing this action will slide in guides 25. I claim- 4 Aroad wheel comprising: cheeks composing the body of the wheel, a cushionlocated between said cheeks and remote from the periphery of the Wheel,an abutment member against which the cushion acts, a plurality of guideslocated between the Cheeks, extensions on said guides passing throughthe cheeks and b olted thereto, annular guide members carried by thecheeks, a plurality of outer segmental members having sockets memos ontheir inner faces, a tread carried by the 15 outer segmental membersbetween the annular guides, a plurality of inner segmental members,bearing against the cushionbetween the cheeks, having sockets, and aplurality of extensible thrust members passing 20 Hudson and State ofNew Jersey, this lst 25 day of July 1921.

JOHN MILLAR.

